PISTON 6V4188 - Caterpillar

Illustration 1 g01041454
Illustration 2 g01041455
Illustration 3 g01041457
Section B-B
Illustration 4 g00641741
Section C-C
Illustration 5 g00641744
View D-DRotation of the pump is counterclockwise when the pump is viewed from the drive end.Bench test requirements: SAE 10W oil must be stabilized at 82° 4°C (180° 10°F) before the test is performed.Pressure cutoff at zero flow ... 35000 300 kPa (5075 45 psi)Test at Full Speed Output ... 269 L/min (71 US gpm) Test pressure ... 690 kPa (100 psi) Test speed of the pump ... 2077 Test speed of the engine ... 1950 Output ... 265 L/min (70 US gpm) Test pressure ... 6900 kPa (1000 psi) Test speed of the pump ... 2077 Test speed of the engine ... 1950Test at Half Speed Output ... 135 L/min (36 US gpm) Test pressure ... 690 kPa (100 psi) Test speed of the pump ... 1039 Test speed of the engine ... 958 Output ... 132 L/min (35 US gpm) Test pressure ... 6900 kPa (1000 psi) Test speed of the pump ... 1039 Test speed of the engine ... 958 (A) Pressure port (S) Suction port (T1) Case drain port (T2) Case drain port (G) External pilot pressure port (M1) Actuator pressure gauge port (M) Discharge gauge port (L1) Port (vent for the seal cavity) (L2) Port (vent for the seal cavity) (R) Drain port (1) Refer to the "Pressure and Flow Compensator Valve". (2) Refer to the "Pump Rotating Group". (3) 117-5920 Spring Free length after test ... 86.4 mm (3.40 inch) Outside diameter ... 28.6 mm (1.1 inch) (4) 117-5926 Spring Free length after test ... 62.0 mm (2.4 inch) Outside diameter ... 20.2 mm (0.8 inch) (5) Torque for four bolts ... 430 N m (315 lb ft) (6) Torque for plug ... 6.5 1.0 N m (60 9 lb in) (7) Torque for orifice ... 6.5 1.0 N m (60 9 lb in)Pump Rotating Group
Illustration 6 g01041459
(A) Dimension ... 136.95 + 0.00 - 0.02 mm (5.3917 + 0.00 - 0.0008 inch)Note: Refer to Braking System, Testing and Adjusting, "Pump Rotating Group (Brake Cooling Motor Drive) - Adjust" for the procedure to obtain dimension (A) . (8) Apply 4C-4030 Thread Lock Compound to the threads of the four bolts during assembly. (9) Shims 6E-0723 Shim ... 0.70 mm (0.028 inch) 6E-0721 Shim ... 0.90 mm (0.035 inch) 6E-0720 Shim ... 1.10 mm (0.043 inch) 6E-0722 Shim ... 1.30 mm (0.051 inch)Note: Refer to Braking System, Testing and Adjusting, "Pump Rotating Group (Brake Cooling Motor Drive) - Adjust" in order to determine the amount of shims to use. (10) 6E-0721 Shim ... 0.90 mm (0.035 inch)Pressure and Flow Compensator Valve
Illustration 7 g01041460
(11) Displacement Solenoid and Valve (12) 6E-3855 Spring Length under test force ... 13.60 mm (0.535 inch) Test force ... 92.0 13.5 N (20.7 3.0 lb) Free length after test ... 17.1 mm (0.67 inch) Outside diameter ... 8.6 mm (0.34 inch) (13) 150-8320 Spring Length under test force ... 17.6